The People's Democratic Republic of Yemen (commonly referred to as South Yemen) became independent as the People's Republic of South Yemen in November 1967, after the British withdrawal from the Federation of South Arabia and the Protectorate of South Arabia. In May 1990, South Yemen unified with the Yemen Arab Republic (commonly referred to as North Yemen) to form the united Republic of Yemen. During the May–July 1994 Civil War, South Yemen seceded from the united Yemen and established the short-lived Democratic Republic of Yemen. Heads of Party Heads of State Heads of Government Heads of Parliament See also President of Yemen Prime Minister of Yemen References Citations Bibliography External links World StatesmenSouth Yemen s Yemen Chairmen of the Presidium of the Supreme People's Council Government of Yemen South Yemen South Yemen